Cotton Fiber Elongation

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Cotton Fiber Elongation

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Author : James S. Parker
language : en
Publisher:
Release Date : 1963

Cotton Fiber Elongation written by James S. Parker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Cotton categories.

Genetics Of Cotton Fiber Elongation

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Author : Eng Hwa Ng
language : en
Publisher:
Release Date : 2013

Genetics Of Cotton Fiber Elongation written by Eng Hwa Ng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Fiber elongation (ability to stretch before breaking) is one of the key components in determining overall yarn quality. Elongation in U.S. upland cotton (G. hirsutum L.) has remained largely neglected due to: absence of monetary incentives for growers to produce high elongation cotton; lack of research interests among breeders; and absence of a reliable fiber testing system for elongation. This study was conducted to determine the genetics of cotton fiber elongation via a diallel and generation means analysis (GMA). Findings from this study should lay the foundation for future breeding work in cotton fiber elongation. Of the seven distinctive upland parents used for the diallel study, general combining ability was far more prominent than specific combing ability for fiber elongation. Cultivar PSC 355 and Dever experimental line were the two parents identified as good combiners for fiber elongation in this study. The slight negative correlation between fiber elongation and strength remained true. Highly significant negative correlation was observed between fiber upper half mean length and elongation. Both Stelometer and HVI elongation measurements correlated well with values of 0.85 and 0.82 in 2010 and 2011, respectively. For the six families used in the GMA analysis, additive genetic control was prevalent over dominance effect. Based on the scaling test, no significant epistatic interaction was detected for fiber elongation. As expected, additive variance constituted a much larger portion of total genetic variation in fiber elongation than the dominance variance. On average, larger numbers of effective factor were identified in fiber elongation than all other fiber traits tested, suggesting that parents used in the GMA study are carrying different genetic materials/ loci for fiber elongation. Considerable gains in fiber elongation may be achieved by selectively crossing these materials in a pure-line breeding scheme while holding other important fiber traits constant. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151034

Influence Of Cotton Fiber Elongation On Fabric Properties Of Type 140 Cotton Sheeting

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Author : Etta Lucille Finley
language : en
Publisher:
Release Date : 1966

Influence Of Cotton Fiber Elongation On Fabric Properties Of Type 140 Cotton Sheeting written by Etta Lucille Finley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Agriculture categories.

Elongation Of The Cotton Fiber

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Author : Joseph Charles O'Kelley
language : en
Publisher:
Release Date : 1950

Elongation Of The Cotton Fiber written by Joseph Charles O'Kelley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1950 with Cellulose categories.

Enhancing Cotton Fiber Elongation And Cellulose Synthesis By Manipulating Fructokinase Activity

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Author : David Granot
language : en
Publisher:
Release Date : 2012

Enhancing Cotton Fiber Elongation And Cellulose Synthesis By Manipulating Fructokinase Activity written by David Granot and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Cotton categories.

A Comparison Of Fiber Elongation Of Four Varieties Of Cotton As Measured By The Tear Test

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Author : Carol Ethelmae Berghaus Barry
language : en
Publisher:
Release Date : 1961

A Comparison Of Fiber Elongation Of Four Varieties Of Cotton As Measured By The Tear Test written by Carol Ethelmae Berghaus Barry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.

Enhncing Cotton Fiber Elongation And Cellulose Synthesis By Manipulating Fructokinase Activity

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Author : United States-Israel Binational Agricultural Research and Development Fund
language : en
Publisher:
Release Date : 2012

Enhncing Cotton Fiber Elongation And Cellulose Synthesis By Manipulating Fructokinase Activity written by United States-Israel Binational Agricultural Research and Development Fund and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.

Improvement Of Work To Break Characteristics Of Cotton Gossypium Hirsutum L Fibers And Yarn Through Breeding And Selection For Improved Fiber Elongation

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Author : Juliana Osorio Marin
language : en
Publisher:
Release Date : 2013

Improvement Of Work To Break Characteristics Of Cotton Gossypium Hirsutum L Fibers And Yarn Through Breeding And Selection For Improved Fiber Elongation written by Juliana Osorio Marin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

The development of cottons with improved fiber quality has been a major objective in breeding programs around the world. Breeders have focused their attention on improving fiber strength and length, and have generally not used fiber elongation in the selection process. Although literature has reported a negative correlation between fiber elongation and tenacity, this correlation is weak and should not prevent breeders from simultaneously improving fiber tenacity and fiber elongation. Furthermore, the work of rupture property, important in the spinning process, could be best enhanced by improving both fiber tenacity and fiber elongation. Fifteen populations were developed in 2007 by crossing good quality breeding lines with high elongation measurements to 'FM 958'; a High Plains standard cultivar with good fiber quality but reduced elongation. Samples in every generation were ginned on a laboratory saw gin, and the lint was tested on HVI (High Volume Instrument). The F2 and F3 generations showed a wide range of variation for elongation (6.9% - 12.8% for the F2 and 4% - 9.20% for the F3) allowing divergent selection for low and high fiber elongation. A correlation (r) of -0.32 between strength and elongation was observed in the F2 individual plant selections. In the F3, the correlation (r) between strength and elongation was -0.36, and in the F4 the correlation (r) was -0.08. Nine lines were selected from the original 15 populations for spinning tests. The correlation between fiber elongation and strength for these lines was positive (r=0.424), indicating that with targeted selection, fiber elongation and strength can be simultaneously improved. Fiber elongation was positively correlated with yarn tensile properties tenacity (r=0.11), work-to-break (r=0.68) and breaking elongation (r=0.87); and was negatively correlated with yarn evenness properties, number of thin places (r=-0.16), number of thick places (r=-0.9), nep count (r=-0.24), hairiness (r=-0.38) and total number of imperfections (r=-0.38). All selections for high elongation were superior for all tensile properties compared to the low selections and the check in the analysis over locations and in each location. Furthermore, selections for high elongation were significantly different from the selections for low elongation and the check. In addition to developing lines for fiber spinning tests with improved, or differentiated, fiber elongation, this project was amended to evaluate and determine the heritability of fiber elongation. Three different methodologies were used to obtain estimates of heritability; variance components, parent off-spring regression, and realized heritability using F3, F4, and F5 generation. No inbreeding was assumed because there was no family structure in the generations within this study. Estimates of heritability by the variance component methods in the F3, F4 and F5 were 69.5%, 56.75% and 47.9% respectively; indicating that 40-50% of the variation was due to non-genetic effects. Parent off-spring regression estimates of heritability were 66.1% for the F3-4 and 62.8% for the F4-5; indicating a high resemblance from parents to off-spring. Estimates of realized heritability were obtained to determine the progress realized from selection for the low and high selection for fiber elongation. Estimates were intermediate (0.44-0.55), indicating moderately good progress from selection. The results from this project demonstrate that it is possible to improve fiber elongation and to break the negative correlation between elongation and strength. Furthermore, it has been demonstrated that improving fiber elongation results in the increase of length uniformity index and decreased short fiber content. Additionally, directed divergent selection was a successful methodology for the improvement of fiber elongation, and was useful to demonstrate that higher fiber elongation has a positive effect on yarn tensile properties, yarn evenness and processing. The development of new cultivars with improved fiber elongation will improve the quality and reputation of U. S.-grown cotton. The ultimate result will be better yarn quality and improved weaving efficiency, and particularly address current weaknesses in U. S. -grown cotton cultivars, especially from the High Plains of Texas, of more short fiber content, lower uniformity ratios, and weaker yarn strength. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/148196

Cotton Fiber And Processing Test Results

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Author :
language : en
Publisher:
Release Date : 1961

Cotton Fiber And Processing Test Results written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Cotton categories.

Cotton Fiber Physics Chemistry And Biology

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Author : David D. Fang
language : en
Publisher: Springer
Release Date : 2018-11-09

Cotton Fiber Physics Chemistry And Biology written by David D. Fang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-09 with Science categories.

Cotton fiber is the most important natural fiber used in the textile industry. The physical structure and chemical compositions of cotton fibers have been extensively studied. Newer high speed spinning instruments are being deployed around the world that demand longer, stronger and finer fibers. Consequently, genetic improvement in fiber quality has been stressed. With improvement in fiber quality has come the realization that further fiber improvement will require a better understanding of fiber development and biology. As a consequence, cotton fiber developmental biology, genetics and genomics have become focal points in the cotton research community. As the longest single-celled plant hair, cotton fiber has been used as an experiment model to study trichome initiation and elongation in plants. This book provides a comprehensive update on cotton fiber physics, chemistry and biology that form the three sections of the book. In the physics section, the physical structure of cotton fiber is first illustrated in great detail. Then a suite of fiber properties and their measuring methods are described. The pros and cons of each method are outlined. New methods to measure physical properties of single fiber and young developing fibers are included. In the chemistry section, the chemical compositions of cotton fibers are described in detail. This knowledge is necessary for efficient modification of cotton fibers for better and broader utilization. The advancement in cotton fiber modification using chemical and enzymatic methods opened new ways to utilize cotton fibers. In the biology section, the book first introduces the utilization of naturally occurring color cottons. Color cottons possess unique attributes such as better fire retardant ability. Advancement in understanding fiber color genetics and biochemical pathways and new utilization of color cottons are discussed. Recent technological advancements in molecular biology and genomics have enabled us to study fiber development in great depth. Many genes and quantitative trait loci related to fiber quality attributes have been identified and genetically mapped. Some of these genes and QTLs are being used in breeding. Progresses in cotton fiber improvement using breeding and biotechnology are discussed in the last chapter. This book serves as a reference for researchers, students, processors, and regulators who either conduct research in cotton fiber improvement or utilize cotton fibers.